import java.util.Scanner;

public class Demo2 {
    private static int n = 0;

    public static void main(String[] args) {
        Thread t1 = new Thread(() -> {
            while(n == 0){
                //啥都不写
            }
            System.out.println("t1 线程结束循环");
        }, "t1");

        Thread t2 = new Thread(() -> {
            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入一个整数：");
            n = scanner.nextInt();
        });
        t1.start();
        t2.start();
    }
}
